Variable Speed Case Cooling Fan?

bobdobolina

Member
Jun 8, 2000
107
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I believe there's an easy way to wire a three way switch into your fans, allowing you to run at full-speed/off/half-speed, based on the three switch positions. It may be a cheap solution rather than buying variable speed designed fans. I tried to re-locate the link I had seen this explained and demoed on but I couldn't. Maybe someone with more electrical exp. than I knows about the wiring, resistors and other setup and can help you build such a thing. If I find the link I'll update this post. Best of luck...
 

jhalada

Member
Dec 6, 1999
84
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I read somewhere that the simplest way to manually control the speed is to have a switch that decides between default 12V (12V and ground), 7V (12V and 5V) and 5V (5V and ground)
 

Jhhnn

IN MEMORIAM
Nov 11, 1999
62,365
14,685
136
Nice little how-to:

Cheek

Use a 240 ohm resistor in series with standard 1.5v .015a LED's.

Or try this kit:

MPJA
 

skriefal

Golden Member
Apr 10, 2000
1,424
3
81
They're available from PhamComputer for $10. Also, if you have a Microcenter store near you, check there. I've seen them there for $10.99, and although the box is labeled "CompuMan" it seems to be the exact same fan as the Enermax available from Pham.
 

jhalada

Member
Dec 6, 1999
84
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I just received the Enermax fans I bought from CrazyPc (before they run out of them), and I have to say they are very quiet. As far as the amount of air they push, it is less, but my CPUs are not any hotter than before.